TM 5-3805-298-23-1
0085
Table 1. 262 Five-Volt Transmission Sensor Power Supply Diagnostic Codes - Continued.
085
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
262-4 Five-Volt Sensor
Power Supply Voltage Is
Always inspect wiring harness connectors that are involved in the circuit.
Below Normal or the Voltage
Poor connections can often be the cause of a problem in an electrical
Is Shorted Low
circuit. Verify that all connections in the circuit are clean and secure and
that all connections are in good condition. If a problem with the
connection is found, correct the problem and verify that this malfunction
or diagnostic code is active before performing this procedure.
Perform open or short-circuit test at each wiring harness connection to
identify the correct wiring harness to replace.
Tag all wiring harnesses to aid in installation.
Perform this test only if condition is active.
DIAGNOSTIC CODE SET CONDITION
Transmission ECM detects five-volt supply for the transmission neutralizer sensor
and brake charging oil pressure sensor is less than 4.84 Volts DC for more than
one second.
POSSIBLE CAUSE
Lower cab wiring harness is shorted to ground.
Engine wiring harness is shorted to ground.
Faulty transmission neutralizer sensor or brake charging oil pressure
sensor.
Transmission ECM.
Test Step 1. Check for Active
Diagnostic Codes.
Connect MSD, select Transmission
Diagnostic Code 262-4 Active -
924H, and check for active diagnostic
Proceed to Test Step 2.
codes (WP 0008).
Diagnostic Code 262-3 Not Active -
Troubleshooting is complete.
